DAGCombine: always constant fold FMA when target disable FP exceptions
Summary: When trying to constant fold an FMA in the DAG, getNode() fails to fold the FMA if an operand is not finite. In this case this patch allows the constant folding if !TLI->hasFloatingPointExceptions() Reviewers: resistor Reviewed By: resistor Subscribers: hfinkel, llvm-commits Differential Revision: http://reviews.llvm.org/D6912 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 226901
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@ -3620,7 +3620,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL, EVT VT,
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const APFloat &V3 = N3CFP->getValueAPF();
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APFloat::opStatus s =
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V1.fusedMultiplyAdd(V2, V3, APFloat::rmNearestTiesToEven);
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if (s != APFloat::opInvalidOp)
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if (!TLI->hasFloatingPointExceptions() || s != APFloat::opInvalidOp)
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return getConstantFP(V1, VT);
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}
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break;
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